logic: Changed include files being analyzed solely by path

* removed header extensions
* added source extensions to source path setup screen
* added caching to hasFilePath check
* don't show header list in CDB setup
* removed TestSettings.xml

src/lib_gui/qt/window/project_wizzard/QtProjectWizzardContentExtensions.h

@@ -14,13 +14,13 @@ public:
 	QtProjectWizzardContentExtensions(ProjectSettings* settings, QtProjectWizzardWindow* window);
 
 	// QtProjectWizzardContent implementation
+	virtual void populateWindow(QGridLayout* layout, int& row) override;
 	virtual void populateForm(QGridLayout* layout, int& row) override;
 
 	virtual void load() override;
 	virtual void save() override;
 
 private:
-	QtDirectoryListBox* m_headerList;
 	QtDirectoryListBox* m_sourceList;
 };